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/*******************************************************************************
* Copyright (c) 2012, 2016 IBM Corporation and others.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.osgi.container;
import java.util.*;
import org.osgi.framework.namespace.NativeNamespace;
import org.osgi.framework.wiring.BundleCapability;
/**
* An implementation of {@link BundleCapability}.
* @since 3.10
*/
public final class ModuleCapability implements BundleCapability {
private final String namespace;
private final Map<String, String> directives;
private final Map<String, Object> attributes;
private final Map<String, Object> transientAttrs;
private final ModuleRevision revision;
ModuleCapability(String namespace, Map<String, String> directives, Map<String, Object> attributes, ModuleRevision revision) {
this.namespace = namespace;
this.directives = directives;
this.attributes = attributes;
this.transientAttrs = NativeNamespace.NATIVE_NAMESPACE.equals(namespace) ? new HashMap<String, Object>(0) : null;
this.revision = revision;
}
@Override
public ModuleRevision getRevision() {
return revision;
}
@Override
public String getNamespace() {
return namespace;
}
@Override
public Map<String, String> getDirectives() {
return directives;
}
@Override
public Map<String, Object> getAttributes() {
if (transientAttrs == null)
return attributes;
Map<String, Object> result = new HashMap<>(transientAttrs);
result.putAll(attributes);
return Collections.unmodifiableMap(result);
}
Map<String, Object> getPersistentAttributes() {
return attributes;
}
/**
* Only used by the system module for setting transient attributes associated
* with the {@link NativeNamespace osgi.native} namespace.
* @param transientAttrs
*/
public void setTransientAttrs(Map<String, ?> transientAttrs) {
if (this.transientAttrs == null) {
throw new UnsupportedOperationException(namespace + ": namespace does not support transient attributes."); //$NON-NLS-1$
}
if (!(getResource().getRevisions().getModule() instanceof SystemModule)) {
throw new UnsupportedOperationException("Only allowed to set transient attributes for the system module: " + getResource()); //$NON-NLS-1$
}
this.transientAttrs.clear();
this.transientAttrs.putAll(transientAttrs);
}
@Override
public ModuleRevision getResource() {
return revision;
}
@Override
public String toString() {
return namespace + ModuleRevision.toString(attributes, false) + ModuleRevision.toString(directives, true);
}
}
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